Window sash mounting



March 20 1962 H. K. LuNDGRr-:N ET As. 3,025,575

WINDOW SASH MOUNTING Filed Aug. s, 195e United States Patent Odtice 3,025,575 Patented Mar. Z, 1962 3,025,575 WINDW SASH MUNTNG Herbert K. Lundgren, Oshkosh, Wis., and Arnold lt/.

Cook, Evanston, and Paul N. Cottin, Golf, lll., as-

signors to Allmetal Weather-strip Company, Evanston,

lll., a corporation of illinois Fiied Aug. 3, 95%, Ser. No. 753,932

7 Claims. (Cl. Ztl- 52) This invention relates generally to window constructions and is more particularly concerned `with an improved form of guide and weatherstrip means for double hung window sashes which rely for their sash balancing function upon a coil spring.

The main object of the present invention is to provide a novel arrangement of a combined guide and weatherstrip structure for a spring balanced window sash,

which is adapted to tbe readily tted in the frame of a double hung window, which can be pre-assembled before installation, and which provides an economical, neat appearing guide means affording protection and concealment of the counterbalance spring at all times. A further object of the invention is to provide in such arrangement improved hanger constructions for use with counterbalancing springs.

Other objects and advantages of the present invention will be apparent from the following description of a selected embodiment of the invention which is illustrated in the accompanying drawings, wherein:

FIGURE 1 is a cross-sectional View of a preferred embodiment of the invention, taken along a line above the `guide means.

FlGURE 2 is a side elevational view of the window frame and sash guide structure, with portions broken away and in section to more clearly illustrate structural details.

FIGURE 3 is a perspective View of one of the hangers shown in FlGURES l and 2.

FIGURE 4 is a perspective View of the other hanger shown in FGURES 1 and 2.

The improved window sash guide means illustrated in the drawings comprises generally a metal base member 10 which is of a size that it extends substantially the entire length and width of the opposing recesses provided in the sides i12 of the Window frame structure. The base member l includes rebent flange portions i4 and 16, respectively, along the opposite outer edges thereof to provide a weather seal with the adjacent side edges 1S and 20 of. the sash frames 22` and Z4 ywhich are slidably disposed within the guide means. The ybase member is further formed `with a pair of inwardly facing channel portions 26 and 23, respectively, which provide a guide for the inner side edge of the inner sash 22 and the outer side edge of the outer sash 24. lnwardly of these sash guide channels 26 and 23 there is a pair of enlarged channel portions 30 and 32 which bear against the side frame member 12, with each of these channels facing inwardly toward the side edge of the associated window sash. Each of these larger channels 30 and 32 include a leg portion, 34 and 36 respectively, which extends inwardly to a position within a side edge groove, indicated at 38 and 49, provided in the window sash. The larger channel portions thus cooperate with the sash grooves 38 and 40 to provide a pair of longitudinally extending housings for the counterbalancing springs 42 and 44. Furthermore, the inwardly extending legs 34 and 36 are formed integral with, or otherwise suitably joined to, the inner legs of the side channels 26 and 28 to provide therewith guide means for retai. ing the sashes in guided position within the frame. The central section of the base member it) is in the for-m of a raised at portion 43 disposed in coplanar relation with the web of the outer guide channels 26 and 25 for cooperation therewith in providing coplanar sliding surfaces for the inner and outer edges of both Window sashes. As indicated in the illustrated embodiment, the base member iii is preferably formed of a single sheet of metal, as by stamping, so as to facilitate production and provide smooth, rebent portions along the adjoining edges of the described channel portions. It will be understood, of course, that several pieces of suitably formed sheet metal may be joined, as by welding, to provide a similarly formed base member.

It will be noted that in the illustrated construction no parting stop is provided, nor is any required. The disposition of the outer pair of guide channels 26 and 2d is elective to retain the window sashes against any transverse displacement. Additional guide means is provided by a metal cover member d5 which is disposed centrally of the base member fill along approximately the upper half of the window frame. This cover member includes a central portion 46 which is suitably attached, as by one or more rivets 43, in abutting relation to the central web portion d?. of the base member and which is generally coextensive therewith in Width. At opposite edges of this central portion 46 of the cover member 45 there is provided a pair of integrally formed channel sections 50 and 52 `which face the base member lll and have a width approximately equal to that of the larger channel sections 3d and 32 in the base member. Preferably, each of the side edges of the cover member 1115 include rebent portions which are suitably joined7 as by spot Welding, to the legs 34- and 36 of the channels 3d and 32. Thus, it is seen that this additional member 45 provides with the base member Titi a pair of additional guide means for the innermost side edges 5ft and Se, respectively, ofthe pair of window sashes and also provide a portion of the housings for the window sash counterbalance springs. Although this cover member 10 might be made so as to extend the length of the window frame, it is more economical and, therefore, preferable that such `cover member extend only slightly below the bottom of the upper sash, which is ordinarily near the center of the window frame. ln this way, there is a saving in material while still providing a `complete enclosure for the counterbalancing spring. Any lowering of a Window sash below the lower edge of the cover member results, of course, in a covering of the counterbalance spring by the side of the window sash.

In the illustrated embodiment each of the counterbalance springs 42 and 44. is a coil spring which is suitably attached at its upper end in fixed position with respect to the window frame structure. In the illustrated structure, attachment of the upper end of the spring is provided for by a double coiled eye portion 5S of the spring which straddles the upper edge of the channels 30 and 32 ofthe base member. Of course, the entirespring is concealed from View and protected against the weather by the housing formed by the channel section 3l) and 32 and the cover member 45. The lower end of each coil spring is provided with a detachable hanger which engages the lower edge of the window sash. Two forms of hangers are illustrated in the drawings. The hanger 6] (FGURE 3) for the inner sash is shown as being formed from wire or the like, and this hanger includes an upper part 62 shaped generally in the form of a hook, which is engageable with an eye 64 (FIGURE 2l formed at the lower end of the counterbalance spring `4t2. The intermediate portion of this hanger includes a transversely ent section 66 which thereby provides a greater etlective width for the hanger, in order to ati-ord a more stable engagement with the side edge of the window sash and the adjacent web portion of the metal spring housing. The lower portion of hanger 6d includes a projecting end section 68 which is adapted to extend from the spring housing into a position of engagement with the lower edge of the window sash. Preferably, a substantial portion of the hanger is coated with plastic, rubber or the like. This form of hanger is particularly advantageous in connection with the inner window sash which is preferably provided with weatherstrip means along its lower edge. As seen in FlGURE 2, the lower edge of the inner sash is provided with a longitudinally extending central groove 70 and a rebent metal strip 72 is secured in this groove to provide weather seal for the sash when the sash is in its lowermost position of engagement with the window sill 74. By thus providing a weatherstrip which is somewhat less in width than the width of the groove 7G, there is provided ample room for insertion of the lower end 63 of the hanger 60 alongside the weatherstrip 72 within the groove. in this way, the weatherstrip serves to maintain the hanger in position with its lower end disposed at right angles to the side edge of the window sash and thereby prevents any accidental displacement of the hanger with respect to the sash.

Another novel form of hanger is shown particularly in FIGURE 4. This hanger 76 is illustrated in connection with the outer sash 24 seen in FIGURES l and 2 but, of course, might be employed to advantage with either inner or outer window sashes.

As shown in FIGURE 4, the hanger 7o is generally L-shaped and includes a straight main portion or member 78 which has formed along one edge thereof a series of spaced-apart notches. These notches are alternately in the form of a cut or notch 81B having a rather narrow opening and a cut S2 with a relatively wider opening. The counterbalance spring 44 is disposed with its lower end receivingT the hanger member 73 internally of its coils, and an eye portion 34 at the lower end of the spring is positioned so that the lowermost part thereof is Within one of the narrow notches 89 and the upper part of the eye lies within one of the wider notches 82. It is seen, therefore, that the series of notches Sil and 82 provided in the hanger member 76 permit an adjustment of the position of the hanger relative to the spring, so as to selectively vary the tension exerted by the spring on the window sash or to accommodate sashes and/or springs of various lengths. The lower portion of this hanger member 76 has pivotally secured thereto a generally L-shaped element 86 which has one leg 88 thereof extending parallel to the main part 7S of the hanger and the other generally flat leg 90 thereof extends transversely in position for engagement with the lower edge of the window sash. This L-shaped member includes a slot 92 therein for slidably positioning such member along the elongated hanger, and a pin 94 or the like is disposed in the member 78 below the B -shaped member 86 so as to retain the latter in relatively fixed position along the hanger. The portion of the transversely disposed leg member which engages the pin N is preferably bent or curved to provide some rocking movement of the supporting clip relative to the main hanger portion. This insures a hat transversely extending engagement of the leg 9i) with the underside of the window sash.

Although only one side of a window construction is illustrated, it will be understood that the other side may be of similar construction, or it may be of a different known form of constructi-on providing yieldable movement of the window sashes in the direction of the other side fram.x member for removal of the sashes.

it is seen, therefore, that there is provided herein a novel window construction which includes an improved form of sash guide means providing constant enclosure of the counterbalance spring and which includes new and improved hanger means for connecting the lower end of the counterbalance spring with the sash.

Although shown and described with respect to particular structure and materials, it will be apparent that various i modifications might be made without departing from the principles of this invention.

We claim:

l. In a window sash mounting adapted to receive a pair of juxtapositioned, slidably mounted window sashes hav-4 ing longitudinally extending grooves formed along side edges thereof, a base guide member adapted to extend substantially the length and width of a window frame and including a pair of llanges along opposite side edges thereof which are adapted to abut the side of the window frame and which extend inwardly to a position of facing engagement with the outwardly facing side surface of each ot the window sashes, intermediate portions of said base member being formed to provide spaced-apart channel sections disposed generally opposite the positions of the longitudinally extending grooves of the window sashes which are to be positioned in said mounting, the webs of said channel sections being generally coplanar with the` portion of said side edges that is adapted to abut the wln-f dow frame side, and a portion of said base member interlmediate said channel sections being disposed to engage the side edges of the window sashes at a position thereon adjacent the groove in each sash, and a cover member secured to said base member and including a center portion and a pair of spaced apart channehforming portions which complement said channel sections of said base member to form therewith a housing for enclosing a counter-balance spring therewithin, said channel forming portions of said cover member being disposed and constructed to be received at least in part within the longitudinally extending grooves of the sashes to provide a guide for sliding movement thereof.

2. A window sash mounting, for receiving a pair of juxtapositioned, vertically slidable window sashes each having longitudinally extending grooves formed therein along a side edge thereof, said mounting comprising a base member adapted to extend substantially the length and width of a window frame and including a pair of similarly facing parallel anges formed along opposite side edges thereof and which are adapted to abut the side of a window frame with the free edge portions of said flanges extending inwardly to a position providing for facing engagement thereof with the outwardly facing side surfaces of the window sashes, intermediate portions of said base member being formed to provide spaced-apart longitudinally extending channel sections at positions generally opposite the positions of the longitudinally extend# ing grooves of the window sashes to be positioned in said mounting, the webs of said channel sections being generally coplanar and in position to abut the window frame side, said base member including a center portion intermediate said channel sections which is disposed to engage the side edges of the window sashes at a position thereon adjacent the groove in each sash, and a cover member disposed in fixed relation to said base member and including a longitudinally extending flat center portion and a pair of spaced apart channel-forming side portions, said channel-forming side portions being dis posed to complement said channel sections of said base member in forming therewith a housing for enclosing a counter balance spring therewithin, said channel forming portions of said cover member being constructed and arranged to be received within the longitudinally extending grooves of the sashes to provide a guide therefor.

3. A window sash mounting for receiving a pair of vertically slidable window sashes having longitudinally extending grooves formed along a side edge thereof, said mounting comprising a sash guide and weatherstrip including a base member adapted to extend substantially the length and width of a window frame and including a pair of similarly facing, parallel liangeg along opposite side edges thereof, said base member being positionable within the side recess of a window frame with said llanges extending inwardly to a position of" facing engagement with the outer side surfaces of the window sashes, said base member having integrally formed, intermediate portions whicn provide spaced-apart longitudinal channel sections disposed to lie generally Opposite the positions of the longitudinally extending grooves of the window sashes which are to be positioned in said mounting, the webs of said channel sections being generally coplanar with the portion of said side edges adapted to abut the window frame side, and a portion of said base member intermediate said channel sections being disposed to engage the side edges of the window sashes at a position thereon adjacent the groove in each sash, and a cover member including a center portion and a pair of spacedapart channel-forming portions which complement said channel sections of said base member to form therewith a housing for enclosing a counter-balance spring therewithin, said channel forming portions of said cover member being disposed and constructed to be received at least in part within the longitudinally extending grooves ot' the sashes to provide a guide therefor.

4. A window sash mounting for receiving a pair of vertically slidable window sashes having longitudinally extending grooves formed along a side edge thereof, said mounting comprising a sash guide and weatherstrip` including a base member adapted to extend substantially the length and width of a window frame and including a pair of similarly facing, parallel anges along opposite side edges thereof, said base member being positionable within the side recess of a window frame with said anges extending inwardly to a position of facing engagement with the outer side surfaces of the window sashes, said base member having integrally formed, intermediate portions which provide spaced-apart longitudinal channel sections disposed to lie generally opposite the positions of the longitudinally extending grooves of the window sashes which are to be positioned in said mounting, the webs of said channel sections being generally coplanar with the portion of said side edges adapted to abut the window frame side, and a portion of said base member intermediate said channel sections being disposed to engage the side edges of the window sashes at a position thereon adjacent the groove in each sash, a cover member including a center portion and a pair of spaced-apart channelforming portions which complement said channel sections of said base member to form therewith a housing, said channel forming portions of said cover member being disposed and constructed to be received at least in part within the longitudinally extending grooves of the sashes to provide a guide therefor, and a counter-balance coil spring disposed within said housing and secured at one end to the upper end of said window sash mounting, and a hanger connected to the lower end of said counterbalance spring for supporting the lower edge of a window sash, said hanger comprising an elongated member coaxially received within said spring and including a plurality of notches along an edge portion thereof, an adjoining pair of said notches engaging a lower coil of said spring with a lower portion of the coil engaging the lower one of said pair of notches and the upper portion of said coil resting within the other of said pair of notches, a generally L-shaped element pivotally mounted adjacent the lower end of said elongated member in position for supporting engagement with the lower edge of a window sash by means of a generally horizontally extending leg portion of said L-shaped member.

5. In a window sash mounting including elongated coil springs for counter-balancing vertically movable window sashes guidably received within said mounting, an improved form of hanger construction for adjustably supporting the lower edge of a window sash comprising an elongated member adapted to be partially received within the coil spring, said elongated member including a plurality of notches along an edge portion thereof which are adapted for releasable engagement with the lower coil of the coil spring wherein a lower portion of the coil engages one of said notches and the upper portion of the coil rests within an adjacent notch, and a generally L-shaped element removably and pivotally mounted at the lower end portion of said elongated member in position for supporting engagement with the lower edge of a window sash through lmeans of a generally horizontally extending leg portions of said L-shaped member, the other leg of said L-shaped member extending upwardly alongside said elongated hanger member in position `for engagement therewith, said horizontally extending leg portion including an upwardly curving intermediate section including a slot therein receiving said elongated member, and a transverse pin in said elongated member disposed in supporting engagement with the curved section of said horizontal leg portion to permit rocking movement of said L-shaped member relative to said elongated member.

6. In combination with a pair of slidably mounted window sashes, each having longitudinally extending grooves formed along a side edge thereof, and a recess formed along the bottom edge of at least one window sash and including therein a weatherstrip having a width less than the width of said recess, a window sash mounting comprising a base guide member adapted to extend substantially the length and width of a frame for receiving said window sashes and said guide member, including a pair of flanges along opposite side edges thereof, which are adapted to abut the side of the window frame and which extend inwardly to a position of facing engagement with the outwardly facing side surface of each of said window sashes, intermediate portions of said base member being formed to provide spaced-apart channel sections disposed generally opposite said longitudinally extending grooves of said window sashes, the webs of said channel sections being generally coplanar with a portion ot said side edges which are adapted to abut the window frame, and a portion of said base member intermediate said channel sections being disposed to engage the side edges of said window sashes at a position thereon adjacent said grooves, a longitudinal 'c`ver member secured to a central portion of said base member and including channel-forming portions which complement said channel sections of said base member to form a housing, said housing being received at least in part within said longitudinal grooves of said said sashes to thereby provide a guide for sliding movement thereof, a counter-balance coil spring disposed in each of said housings and fixed in position at one end with respect to the upper end of said sash mounting, a hanger xed to the free end of each of said springs in supporting engagement with the lower edge of the associated window sash, said hanger for said one window sash comprising an elongated member including a hook at its upper end engaging the lower end of said spring, a laterally extending end portion of said elongated member being disposed in said recess of said one Window sash between said weatherstrip and a side edge of said recess, and an intermediate portion of said elongated hanger member being bent in a plane transverse to said end portion and disposed to lie substantially flat within said groove in the window sash to thereby cooperate with said end portion, to prevent accidental displacement of said hanger relative to said sash.

7. In a window sash mounting, including the use of elongated coil springs for counterbalancing vertically slidable window sashes which are guidably received within the mounting, an improved form of hanger construction for supporting the lower edge of a window sash comprising an elongated wire member having a generally straight upper end portion terminating in means for engaging the lower end of the counter-balance spring, an intermediate portion extending outwardly and downwardly from said upper end portion and presenting a length of wire disposed in laterally offset but generally parallel relation to References Cited in the le of this patent UNITED STATES PATENTS Madsen Jan. 23, 1940 Hettinger Mar. 26, 1957 Glass 4May 15, 1959 Lundgren Oct. 6, 1959 Goellner Nov. 17, 1959 Czubachowski Nov. 24, 1959 Lundgren June 7, 1960 

